1450208

Information

• Patent Grant
• 1450208

• References
• Source

• Patent Number

  1,450,208

• Date Filed

  Not available

• Date Issued

  Tuesday, April 3, 1923
  101 years ago

• CPC

  • E21B6/08 - Separate drives for percussion and rotation
  • B25D9/125 - driven directly by liquid pressure working with pulses

• US Classifications

  • 173 - Tool driving or impacting
  • 175 - Boring or penetrating the earth